Concrete pipe.



J. HICKSON.

CONCRETE PIPE. APPLICATlON LED OCT- 29,191]. 1,302,553. Patented May 6, 1919.

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UNITED sTnT s PATENT omen.

Josnrn incxson, or mouivfr airman, onio.

'concnnrn r1133.

Specification of Letters Patent.

. Patented Ma o, 1919..

Application filed October 29, 1917. I Serial No. 199,014.

Toall whompz't may concern:

Beit known that I, Josnrn Hrcxsom a citizen of the United States, residing at Mount Gilead, in the county of Morrow and State of Ohio, have invented a new and useful Concrete Pipe, of which the followin is a-specification.

he device forming the subject matter of. this application is a concrete pipe, and the invention aims to provide novel means whereby the ends of the pipe may be calked,

novelmeans being provided for holding the calking. It is within the province of the disclosure to improve generally and to enhance the utility ofdevices of that type to which the present invention appertains.

-- scribed and claimed-it beiiniunderstood that tudinal section showing the meeting ends of changes in the precise em odiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings Figure 1 shows in longitudinal section, a pipe constructed in accordance with the invention; j

Fig. 2 is an enlarged fragmental longitwo pipes;

' Fi 3 is a cross sectionon the line 3-3 of Fig. 2, the core being shown as an added detail; I I

Fig. 4 is a section takenon the line 44 ofFig-Q; and

Fig. 5 is a section taken on the line 5--5 of Fig. 2.

In carryingout the present invention there is provided a concrete pipe 1 surrounded at one end by a first ring 2 which is made of metal. Adjacent its free extremity, the

first ring 2 is supplied with an outwardly projecting annular rib 3. The other end of the pipe 1 is. surrounded by a second ring 4 which is made of metal. The rin 4 has a projecting hood '5 of suflicient diameter to receive loosely and-to house the ring 2 on an adjacent pipe. Adjacent its free extremity, the hood 5 is equipped with an 1nwardly projecting annular rib 6. The rings 2 and 4 are provided with inwardly proj acting lugs 7 The pipe 1 is surrounded, be-= tween its ends, by an intermediate ring 8 madeLof metal, and having'inwa projecting lugs 9. Reinforcin rods} 0 are mounted loosely and remove. ly in'the lugs @and 7 and terminate short of the ends of the pipe 1.. v

The ribs 6 and 3 coiiperate to hold calking material 12. It is to be observed that the periphery of therib 3 on the ring ,2 coacts with the inner surface of the hood 5 of lthe ring 4 to-form a reduced groove 11 which is V-shaped in cross section, this groove aid ing materially in holding the ca'lking. It is to be noted that some of the lugs 9 and 7 extend, as shown at 14 to the "inner surface of the pipe 1. The lugs, therefore, are adapted to coact with a core 15, of any desired sort, to support the rings, 2, a and 8, to-

gether with-the' rods 10 during'the molding operation and to provide for a umform' thickness in the shell ofthe Owing to thefact that loosely received withinthe .hood 5, it is not necessary that the pipes be laid in axial .alinement, it being possible to incline one pipe, axially, with"respect to an adjoining pipe, thereby to form a curved pipe line.

Although the rings 2 and. 3 have been shown as of circular form, it willbe, obvious that the particular shape of these rings may be altered, depending upon the cross section of the pipe.

The device forming of this application d scloses 'a simple but eflicient means whereby concrete pipes may be calked, an eflicient means being provided whereby the calking can be held in place.

- ipe. 31c ring 2 is the subject matter .The rings, coacting with the rods 10, serve to reinforce and strengthen the pipe.

It will be understood that additional lateral reinforcing means of any desired type or mesh may be mounted on the rods v10.

Having thus described the invention, I

what is claimed is In a deviceof the class described, a pair of concrete pipes, a firstmetal ring sur- I rounding one end of one pipe and provided adjacent its free extremity with an outwardly projecting annular rib; a second metal ring surrounding one end of the other pipe and provided with a projecting annular hood spaced from the first ring and receivin the'first ring, the second rmg being provi ed adjacent its free, extremity with an inwardly projecting annular rib spaced from the first ringfand coiiperating with g I 1,aoa,ua

the rib of'tth'e finst'ring .to form a. bulking with the rib' of the first ringto defino a V- 10' holding means, the first ring being pl-ain m shapedg oovp for the. reception of 'jcalking. a linement with the rib 'of the second I m lnttestlmo that I cliim the foregoing and the outer Surface of the pipe whi as my own, I we heretoafiixed my. signacarries the first ring being up roximate ly tum 1n the presence of two witnesses.

flush "-withthe outer 811K860; a: t e first ring I JOSEPH HIOKSON. i to permit-the driving of calkin between fiwitnessesz 7 I the. rin and'the'h00d,'the nner end T. B. MAnnw,

of ing inclinedond coiipe rating CAnn-VQBmn. 

